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Published in 2020 at "European Physical Journal C"
DOI: 10.1140/epjc/s10052-020-8058-8
Abstract: We perform a calculation of the mass distribution in the decay, studying both the and decays. The electromagnetic interaction is such that the tree level amplitude is null for the neutral channel, which forces the…
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Keywords:
state decay;
searching bound;
bound state;
state ... See more keywords